Home / 787,045.30-1,086,283.83-500,509.96

Finding the Fourth Proportional to 787,045.30, 1,086,283.83 and 500,509.96

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Solution

The fourth proportional to 787,045.30, 1,086,283.83 and 500,509.96 is: 690,806.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,045.30 : 1,086,283.83 = 500,509.96 : x
  2. Step 2: Convert to fraction form
    787,045.30/1,086,283.83 = 500,509.96/x
  3. Step 3: Cross multiply
    787,045.30x = 1,086,283.83 × 500,509.96
  4. Step 4: Simplify right side
    787,045.30x = 543,695,876,301.95
  5. Step 5: Solve for x
    x = 543,695,876,301.95/787,045.30
  6. Step 6: Final answer
    x = 690,806.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.